[FIX] stock: no label on optional
[FIX] stock: no label on optional

We wanted the JSON popover to have no label on the tree view but
it's problematic with the optional feature that display also no
label on the optional dropdown. It's possible to combine both
by using nolabel="1" instead of an empty string as name.

closes odoo/odoo#54679

Related: odoo/enterprise#11945
Signed-off-by: Arnold Moyaux <1b212d10e7a24dd6fb14e0bb127a40daacfa07e4@users.noreply.github.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo